A282562 - cp's OEIS frontend

A282562 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x,y,z,w nonnegative integers such that both 2x - y and 9z^2 + 666zw + w^2 are squares.

n	a(n)
0	1
1	2
2	2
3	2
4	4
5	4
6	5
7	2
8	3
9	5
10	2
11	2
12	1
13	5
14	6
15	2
16	2
17	5
18	5
19	1
20	5
21	7
22	8
23	1
24	3
25	4
26	2
27	4
28	3
29	9
30	7
31	5
32	2
33	5
34	5
35	4
36	8
37	3
38	9
39	3
40	4
41	4
42	5
43	3
44	1
45	7
46	6
47	3
48	2
49	13
50	7
51	5
52	5
53	5
54	8
55	3
56	2
57	3
58	5
59	2
60	1
61	6
62	10
63	6
64	4
65	8
66	9
67	1
68	7
69	8
70	11
71	3
72	3
73	6
74	6
75	5
76	3
77	11
78	4
79	4
80	4

[1, 2, 2, 2, 4, 4, 5, 2, 3, 5, 2, 2, 1, 5, 6, 2, 2, 5, 5, 1, 5, 7, 8, 1, 3, 4, 2, 4, 3, 9, 7, 5, 2, 5, 5, 4, 8, 3, 9, 3, 4, 4, 5, 3, 1, 7, 6, 3, 2, 13, 7, 5, 5, 5, 8, 3, 2, 3, 5, 2, 1, 6, 10, 6, 4, 8, 9, 1, 7, 8, 11, 3, 3, 6, 6, 5, 3, 11, 4, 4, 4]

cp's OEIS Frontend

A282562 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x,y,z,w nonnegative integers such that both 2x - y and 9z^2 + 666zw + w^2 are squares.

Table of values

List of values

n	a(n)
0	1
1	2
2	2
3	2
4	4
5	4
6	5
7	2
8	3
9	5
10	2
11	2
12	1
13	5
14	6
15	2
16	2
17	5
18	5
19	1
20	5
21	7
22	8
23	1
24	3
25	4
26	2
27	4
28	3
29	9
30	7
31	5
32	2
33	5
34	5
35	4
36	8
37	3
38	9
39	3
40	4
41	4
42	5
43	3
44	1
45	7
46	6
47	3
48	2
49	13
50	7
51	5
52	5
53	5
54	8
55	3
56	2
57	3
58	5
59	2
60	1
61	6
62	10
63	6
64	4
65	8
66	9
67	1
68	7
69	8
70	11
71	3
72	3
73	6
74	6
75	5
76	3
77	11
78	4
79	4
80	4

n	a(n)
0	1
1	2
2	2
3	2
4	4
5	4
6	5
7	2
8	3
9	5
10	2
11	2
12	1
13	5
14	6
15	2
16	2
17	5
18	5
19	1
20	5
21	7
22	8
23	1
24	3
25	4
26	2
27	4
28	3
29	9
30	7
31	5
32	2
33	5
34	5
35	4
36	8
37	3
38	9
39	3
40	4
41	4
42	5
43	3
44	1
45	7
46	6
47	3
48	2
49	13
50	7
51	5
52	5
53	5
54	8
55	3
56	2
57	3
58	5
59	2
60	1
61	6
62	10
63	6
64	4
65	8
66	9
67	1
68	7
69	8
70	11
71	3
72	3
73	6
74	6
75	5
76	3
77	11
78	4
79	4
80	4

cp's OEIS Frontend

A282562 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x,y,z,w nonnegative integers such that both 2*x - y and 9*z^2 + 666*z*w + w^2 are squares.

Table of values

List of values

A282562 Number of ways to write n as x^2 + y^2 + z^2 + w^2 with x,y,z,w nonnegative integers such that both 2x - y and 9z^2 + 666zw + w^2 are squares.

n	a(n)
0	1
1	2
2	2
3	2
4	4
5	4
6	5
7	2
8	3
9	5
10	2
11	2
12	1
13	5
14	6
15	2
16	2
17	5
18	5
19	1
20	5
21	7
22	8
23	1
24	3
25	4
26	2
27	4
28	3
29	9
30	7
31	5
32	2
33	5
34	5
35	4
36	8
37	3
38	9
39	3
40	4
41	4
42	5
43	3
44	1
45	7
46	6
47	3
48	2
49	13
50	7
51	5
52	5
53	5
54	8
55	3
56	2
57	3
58	5
59	2
60	1
61	6
62	10
63	6
64	4
65	8
66	9
67	1
68	7
69	8
70	11
71	3
72	3
73	6
74	6
75	5
76	3
77	11
78	4
79	4
80	4